| Message ID | 20201210212534.216197-11-krzk@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [01/18] ARM: dts: exynos: correct fuel gauge interrupt trigger level on GT-I9100 | expand |
On 12/10/20 11:25 PM, Krzysztof Kozlowski wrote: > The Maxim fuel gauge datasheets describe the interrupt line as active > low with a requirement of acknowledge from the CPU. The falling edge > interrupt will mostly work but it's not correct. > > Fixes: 45dfa741df86 ("ARM: dts: qcom: msm8974-lge-nexus5: Add fuel gauge") > Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> > --- > arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts b/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts > index e769f638f205..4c6f54aa9f66 100644 > --- a/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts > +++ b/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts > @@ -575,7 +575,7 @@ fuelgauge: max17048@36 { > maxim,rcomp = /bits/ 8 <0x4d>; > > interrupt-parent = <&msmgpio>; > - interrupts = <9 IRQ_TYPE_EDGE_FALLING>; > + interrupts = <9 IRQ_TYPE_LEVEL_LOW>; > > pinctrl-names = "default"; > pinctrl-0 = <&fuelgauge_pin>; According to the datasheet for max17048 the ALRT pin is active low, so that looks good. The reason it was implemented EDGE_FALLING is mostly due to fragments taken from downstream, and the fact that it worked :) Acked-by: Iskren Chernev <iskren.chernev@gmail.com>
diff --git a/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts b/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts index e769f638f205..4c6f54aa9f66 100644 --- a/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts +++ b/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts @@ -575,7 +575,7 @@ fuelgauge: max17048@36 { maxim,rcomp = /bits/ 8 <0x4d>; interrupt-parent = <&msmgpio>; - interrupts = <9 IRQ_TYPE_EDGE_FALLING>; + interrupts = <9 IRQ_TYPE_LEVEL_LOW>; pinctrl-names = "default"; pinctrl-0 = <&fuelgauge_pin>;
The Maxim fuel gauge datasheets describe the interrupt line as active low with a requirement of acknowledge from the CPU. The falling edge interrupt will mostly work but it's not correct. Fixes: 45dfa741df86 ("ARM: dts: qcom: msm8974-lge-nexus5: Add fuel gauge") Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> --- arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)